1 Sep Power Quality and Revenue Meter. EM/EMT. IEC Communications Protocol. Reference Guide. BG Rev. A2. The IEC standard defines the protocol for serial interface. The protocol includes five communication modes (A, B, C, D, E) which may, or may not be. IEC (E). INTERNATIONAL. STANDARD. IEC. First edition. This English-language version is derived from the original.

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The protocol is usually half-duplex.

IEC standards for electricity metering

The attributes and methods constitute an object. If the parameter required is in no security group, just a get. The physical media iec 62056 usually either modulated light, sent with an LED and received with a photodiodeor a pair of wires, iec 62056 modulated by a 20mA current loop.

Other IEC parts deal with Electricity metering – Iec 62056 exchange for meter reading, tariff ic load control. Most metering units have special modes for calibration and resetting meter registers.

Retrieved from ” https: IEC or iec 62056 IECwas an international standard for a computer protocol to read utility meters. The following exchange usually takes a second or two, and occurs iec 62056 a person from the utility company presses a meter-reading gun against a transparent faceplate on the meter, or plugs into the metering bus at the mailbox iec 62056 an apartment building.


During sign-on, the handheld 620056 addresses a iec 62056 meter by number. If no sign-off message is sent, the meter automatically signs off after a previously negotiated time interval after the last message. The hand held unit must return an encrypted password. The hand held unit then sends a sign-off message.

Use British English Oxford spelling from December Next the meter informs the hand held unit about the various parameters that are available with it in various security settings viz.

IEC (DLMS/COSEM) Market Evaluation

iec 62056 This describes some registers that describe the current count of metered units i. The meter and hand-held unit negotiate various parameters such as the maximum frame length during transmission and reception, whether multiple iec 62056 can be sent without acknowledging individual frames windowing iec 62056, the fastest communication rate that iec 62056 can both manage only in case of mode E switching to HDLC etc. The general protocol consists of a “sign on” sequence, in which a handheld unit identifies itself to the metering unit.

Views Read Edit View history. Occasionally a manufacturer will invent a new quantity to measure, and in this case, a new or different data type will appear in the meter definition. It is one part of the identification of the object. List of International Electrotechnical Commission standards.


In case of high security parameters,the iec 62056 challenges the hand held unit with a cryptographic password. If the password exchange is ok, the meter accepts the hand held unit- it is iec 62056 on. It is designed to operate over any media, including the Internet.


Any real world thing mapped to an appropriate class type can be described by the attributes defined in the standard; and the iec 62056 defined therewith allow operations to be performed on the attributes.

The Blue book describes the COSEM meter object model and the OBIS object identification system, 620056 Green book describes the Architecture and Protocols, the Yellow book treats all the questions concerning conformance testing, the Iec 62056 book contains iec 62056 glossary of terms. This page was last edited on 24 Januaryat After signing on, the hand held unit generally reads a meter description.

By using this site, you agree to the Terms of Use and Privacy Policy. If the parameter iec 62056 is in low security group, a password authentication of the Iwc is required before information can be read. From Wikipedia, the free encyclopedia. These modes iec 62056 usually protected by anti-tampering features such as switches that sense if the meter enclosure has been opened.